Pneumatic coal pick



PNEUMATIC COAL PICK Filed Feb. l. 1923 Patented Dec. l1, 1923.

UNITED -oHARLEs c. HANSEN, or EASTON, PENNSYLVANIA, ASsIGNoR ToINGERsoLLi-RAND COMPANY, or JERSEY CITY, NEW JERSEY, A CORPORATION orNEW JERSEY.

ENEUMATI'C coAI. PICK.

Application led February 1, 1923. Serial No.' `616,309.

lTo all who/m, t may conce-rn:

Be it known that I, CHARLES C. HANSEN, 'a citizen of the United States,and a resident of Easton, county of Northampton. State of Pennsylvania,have invented a certain Pneumatic Coal Pick, of which the following is aspecification accompanied by drawings.

This invention relates to coal mining ma- Tl0 chines andmoreparticularly to a mounting for rock drills which are used as coalpicks for undercut-ting a face of coal and for fol lowing coal seams andsimilar operations in coal mining.

The use of coal p-icks enables the operator to produce a maximum outputat a minimum expense. Such machines must be capable of yadjustment invarious planes, so that the lcutting implement may be. directed along2139 the coal sea'mS regardlessof ytheir pitch.

Machines ofthis type aty present in use are usuallyheavy andcomparatively expensive.

`The primary object of this inventionv is to enable a light hand-heldpneumatically` 25 .operated tool of the hammer drill type to beadjustably mounted so that it may be adapted for use as a coall pick incoal mining work. A further object is toconstruct a mounting for suchpneumatic tools which will enable the tool to be adjusted to variouspositions either ina horizontal plane or a` vertical plane or rotatedabout its longi-y A still further object is toV tudinal axis. equip such'a standard pneumatic tool with removable guiding means which may bequickly attached to the tool so that it ma be used in the mounting.

A still further Objectis to adapt a mounting of this type'to accommodatedrills proinomeans.

TVith the above'and other objects in view my invention consists in thefeatures of Construction and operation set forth in the followingspecification and illustrated in the accompanying drawings forming apart hereof, in whichy i Figure 1 is a side elevation partly'in sectionof a "hand-held hammer drill provided with fixed, guiding means andmounted in the carriage in operative position, one side of the cradlebeing. removed;

Figure 2 is a transverse sectional viewv taken on the line Q-Q'Of Figure1 looking in the direction of the arrows; Y

vided with either fixed Vor removable guid-l 1 to reciprocate,.to strikean 'anvil block B and therebyactuate thek pick C. This hammer drill hasa gripping handle A and is vadapted to be mounted on a carriage whichrincludes a cylindrical cradle D, made up of two uniformsemi-cylindrical sections E and F, the sections being adapted to bejoined by means of bolts G and H, which pass ythrough lugs J and Klocated on the top and bottom longitudinal edges respectively of ythesec- `tions E'and F. Trunnions L and O are `provided at' the sides ofthe sections E and '80 F respectively, and these trunnions L and O areadaptedl to fit in the hubs Pof 'a pair of wheels Q.- The. cradlesections E and F 'have semi-cylindrical internally projecting portions Rat either end in which portions a semi-circular 'guiding 'groove S isformed.

In the preferred modification shown in .Figures ly and 2,` the hammerdrill is provided with guides adapted to engage the grooves S so thatthe hammerv drill may be yrotated about its longitudinal axis whenpositioned withinthe cradle. The guides as shown in this instancecomprise a pair of integral circular flanges T located at Ithe forwardand rearward endsof the cylinder '95 l A, but a series of lugs ory other-uiding `means may be provided'ontlie cylin er and uponv the wheels. Thecradle and vdrillwill 110 of being rotated about its longitudinal axis iand of being oscillated in vertical and horizontal planes. i

3. A pneumatic coal pick. ycomprising a wheeled carriage having alongitudinally divided cylindrical cradle and means for securing theportions together, said cradle being trunnioned between the wheels,internal circular guiding means at opposite ends of the cradle, a fluidactuated rock drill adapted to be enclosed within the cradle and guideson the forward and rearward ends of the cylinder of said rock drilladapted to cooperate with the internal circular guiding means of thecradle whereby the rock drill may be moved bodily forward and backwardwith the carriage, and is capable of being rotated` about itslongitudinal axis and of being oscillated in vertical and hori- 20zontal planes.

the forward and rearward ends ofthe cyl.

inder of said rock drill adapted to cooperate with the internal circularguiding means of the cradle whereby the rock drill` may be moved bodilyforward and backward with the carriage, and is capable of being rotatedabout itsv longitudinal axis and of being o'scillated in vertical andhorizontal planes.

In testimony whereof I have signed this specification.

CHARLES o. HANSEN.

